3-4mm Heavy Steel U Post Roll Forming Machine With Inline Punching And Stop Cut System
These introductions refer only to the production line and configuration shown in the main image. Each machine is custom-built. Metalign welcomes your inquiry and provides the right production line—forming metal into profiles aligned to your needs.
1. Production Line Overview
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A dedicated roll forming solution designed for highway infrastructure manufacturers, offering automation, high-precision punching, and strong steel profile forming for 3–4mm U posts.
2. Profile Description
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Cold-rolled galvanized steel U post, 3–4mm thick, with top flanges and slotted holes, designed for anchoring guardrails. Features strong impact resistance, standardized hole positions, and applications in road safety.
3. Production Process
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5T Hydraulic Decoiler → Feeder & Guide → Leveling Machine → Hydraulic Punching → Guiding Device → Roll Former → Stop Shear Cutting → Out Table
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The production begins with heavy coil feeding aided by a motorized head feeder. After leveling, high-speed hydraulic punching creates mounting holes before roll forming. Stop-cutting ensures no material waste.
4. Technical Parameters
| Machine | Analysis |
| Hydraulic Decoiler | Holds and feeds heavy 3–4mm coils (up to 5T). |
| Includes pressing arm to avoid coil bouncing. | |
| Head-Type Feeder | Provides extra force to push thick steel forward. |
| Prevents steel buckling at coil start. | |
| Leveler | Flattens steel for consistent punching and forming. |
| Built with forming base to ensure alignment. | |
| Hydraulic Punching | One large, one small station to punch holes before forming. |
| Shares base with roll former, keeps hole accuracy. | |
| Guiding Device | Aligns material into forming section smoothly. |
| Roll Former | Gearbox-driven for high torque and stability. |
| Form U shape with side flanges for guardrail post. | |
| Stop Shear Cutter | Cuts to length without producing scrap. |
| Controlled by encoder for precise cut length. | |
| Out Table | Collects formed and cut profiles. |
5. Key Focus
- Hydraulic head-feeder ensures smooth entry for thick steel coils.
- Punching and forming machine share one base for better alignment.
- Hole positions align with installation points for efficient post-assembly.
- Stop-cutting avoids scrap and improves material utilization.
- Integrated gearbox drive ensures stability in thick material forming.
6. Production Line Components
| Machine | Quantity |
| Hydraulic Decoiler | 1 set |
| Head-Type Feeder & Guide | 1 set |
| Leveling Machine | 1 set |
| Hydraulic Punching Machine | 1 set |
| Material Guiding Device | 1 set |
| Roll Former | 1 set |
| Hydraulic Cutter | 1 set |
| Out Table | 2 sets |
| Hydraulic Station | 2 sets |
| PLC Cabinet | 1 set |
7. Customization Options
- We offer tailored solutions for the U post profile, including adjustable punching die positions, post dimensions, hole shapes (round/oval), and forming stations for different U post sizes or wall thickness from 2.5mm to 5mm. Roll forming speed and decoiler type can also be upgraded for large-scale projects.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.